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Junior Varsity
Amp input sensitivy
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<blockquote data-quote="Ryan Lantzy" data-source="post: 18875" data-attributes="member: 7"><p>Re: Amp input sensitivy</p><p></p><p>Even amplifiers with DSP built in have an analog input stage. Only an idiot would design the input stage that would overload and go right into hard 0dBFS. I don't have schematics for an I-Tech, but I believe you're very mistaken.</p><p></p><p>Most likely, the input stage of the amp is not adjustable at all in the analog realm. I probably samples the input and has some very conservative max input above 22 dBu. After it samples it, and it's in the digital realm that's where any adjustment in gain would take place. Again, I don't know this for sure, but I would bet this is the case. Therefore, I think the exact opposite is true and a low gain setting would very likely not affect the headroom as far as the input is concerned.</p><p></p><p>I.e. if changing the input sensitivity actually changes the gain in the analog input stage, then this could cause input clipping. If the knobs turn down some other digital gain stage, there will be no clipping.</p></blockquote><p></p>
[QUOTE="Ryan Lantzy, post: 18875, member: 7"] Re: Amp input sensitivy Even amplifiers with DSP built in have an analog input stage. Only an idiot would design the input stage that would overload and go right into hard 0dBFS. I don't have schematics for an I-Tech, but I believe you're very mistaken. Most likely, the input stage of the amp is not adjustable at all in the analog realm. I probably samples the input and has some very conservative max input above 22 dBu. After it samples it, and it's in the digital realm that's where any adjustment in gain would take place. Again, I don't know this for sure, but I would bet this is the case. Therefore, I think the exact opposite is true and a low gain setting would very likely not affect the headroom as far as the input is concerned. I.e. if changing the input sensitivity actually changes the gain in the analog input stage, then this could cause input clipping. If the knobs turn down some other digital gain stage, there will be no clipping. [/QUOTE]
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